Between Your Last Paycheck and Your First RMD Sits the Lowest Tax Rate You'll Ever See
Between Your Last Paycheck and Your First RMD Sits the Lowest Tax Rate You'll Ever See.
Married couples filing jointly can recognize roughly $133,000 in gross income at 12% or less before hitting the 22% bracket in 2026.
Roth conversions during this window lock in a 12% tax rate instead of the higher rate of 22 to 24% that hits once RMDs and Social Security overlap.
Fill the 12% bracket with Roth conversions each year and delay Social Security, since starting benefits raises the taxable share of each check.
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There is a stretch of years, usually from the last paycheck through age 73, when a retiree's taxable income can be lower than at any other point in adult life. Wages have stopped. Social Security may be deferred. Required minimum distributions have not started. What sits in the middle is a window where the federal tax code applies a marginal rate of 12% or less to a meaningful slice of income for most married couples. Understanding that the window is the difference between a comfortable drawdown and a decade of avoidable tax leakage.
For tax year 2026, the standard deduction is $32,200 for married couples filing jointly and $16,100 for single filers. The 10% bracket for joint filers applies to the first $24,800 of taxable income, and the 12% bracket applies to taxable income up to $100,800. After accounting for the standard deduction, a married couple can recognize roughly $133,000 of gross income and still have their top dollar taxed at no more than 12%. The 22% bracket begins immediately above that threshold. The gap between 12% and 22% is where most of the planning value lives.
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Wages and salaries account for roughly half of national personal income. For a household that just stopped working, that income line goes to zero. Social Security does not have to start at 65. Delaying benefits raises checks by about 8% per year up to age 70, which is why many financially secure retirees defer. Under SECURE 2.0, RMDs on traditional IRAs and 401(k)s do not begin until age 73. That combination of no earned income, no Social Security yet, and no forced withdrawals is what creates the low tax runway.
The strategic use of this window, for households that can afford it, is to fill the 12% bracket with Roth conversions from traditional retirement accounts. Every dollar converted at 12% is a dollar that would otherwise likely come out at 22% or 24% once RMDs stack on top of Social Security. The behavior is worth understanding: on conversion, ordinary income tax is due that year on the amount moved, so the check to the IRS is real and immediate. What it buys is a permanently tax-free bucket, insulated from future rate increases and entirely from the RMD schedule.
Readers who want more in-depth coverage of conversion math can find it in our Roth Window report, which walks through how low-tax years compound into RMD relief.
Two frictions matter during the gap years. First, cash held for living expenses during the gap earns very little in a basic bank account. The FDIC national average 12-month CD rate sits at 1.65%, while the 10-year Treasury yield is 4.54%, a gap that argues for Treasuries or brokered CDs rather than a standard savings account. Second, inflation quietly erodes the value of every deferred dollar. The 2026 Social Security COLA came in at 2.8%, and core PCE inflation remains a persistent pressure for retirees.
The strategy assumes a traditional balance worth converting. Vanguard's How America Saves 2026 report puts the average 401(k) balance at $167,970, against a median of $44,115. The average is skewed by large accounts, while the median is where the typical household actually sits. For those with six-figure traditional balances, the window is genuinely valuable. For households closer to the median, the conversion decision is smaller in dollar terms but still real, particularly if future Social Security income will push them into the 22% bracket anyway.
Three actions define the window. First, project taxable income for each gap year and compare it to the top of the 12% bracket, $100,800 for joint filers in 2026, then convert enough traditional IRA money to fill the space. Second, hold gap-year cash in Treasuries or brokered CDs rather than bank savings, given the spread between the 4.54% Treasury yield and the 1.65% national CD average. Third, coordinate the Social Security claiming decision with the conversion schedule, because once benefits start, provisional income rules can pull more of each check into the taxable zone. The window closes on its own at 73. Everything done before then is on the retiree's terms.
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